CROSS_TOOLCHAIN=amd64-gcc fails to build after clang 3.6.0 import

[Dimitry Andric]

On 23 Mar 2015, at 01:49, Craig Rodrigues <rodrigc at FreeBSD.org> wrote:
> 
> Hi,
> 
> I tried to build HEAD with gcc 4.9.1 after the latest clang 3.6.0 import,
> and am getting
> new build failures related to C++ such as:
> 
> /builds/FreeBSD_HEAD_external_toolchain_gcc/obj/builds/FreeBSD_HEAD_external_toolchain_gcc/tmp/usr/include/c++/v1/type_traits:881:87:
> error: use of deleted function
> 'clang::Sema::TypoExprState::TypoExprState(const
> clang::Sema::TypoExprState&)'
> 
> sizeof(__is_convertible_imp::__test<_T2>(__is_convertible_imp::__source<_T1>()))
>     == 1
> 
> See full build logs here:
> https://jenkins.freebsd.org/job/FreeBSD_HEAD_external_toolchain_gcc/21/console
> 
> Any ideas what the problem might be?

Yes, this is a bug in libc++, when compiling it with newer versions of
gcc.  I reported this upstream some time ago: https://llvm.org/PR22771

Still haven't had enough time to test Eric Fiselier's patch for it.  I
hope I see the bottom of my TODO list anytime soon...

-Dimitry

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